Drill-sharpener.



H. G. OLIVE.

DRILL SHARPEMR.

APPLICATION FILED SEPT. 7. 1915.

Patented Sept. 12.1916.

HENRY G. OLIVE, 0F METCALF, ARIZONA.

I DRILL-SHARPENER.

Specification of Letters Patent.

Patented Sept. 1241916.

Application filed September 7, 1915. Serial No. 49,318.

To all whom it may concern:

Be it known that I, HENRY G. OLIVE, a citizen of the United States, residing at Metcalf, in the county of Greenlee and btate of Arizona, have invented certain new and useful Improvements in Drill-Sharpeners, of which the following is a. specification, reference being-had to the accompanying drawings. v

This invention relates to an improved ject to provide means in combination with the ordinary blacksmiths anvil, whereby mining drills may be easily and quickly sharpened.

The invention has for another and more particular object to provide an anvil having a base section and an upper relatively movable section, said anvil sections being provided with mating drill receiving grooves, and means removably mounted upon the lower section of the anvil to support the drills in position.

It is a further general object of the invention to provide a device of the above character which is exceedingly simple in its construction, highly serviceableandg geliable in practical operation and provides means for expeditiously sharpening the drill bits.

With the above and other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts to be hereinafter more fully described, claimed and illustrated in the accompanying drawing, in which,

Figure 1 is a perspective view of my improved combination anvil and drill sharpening device; Fig. 2' is a plan view with the top part of the anvil tilted back as shown in Fig. Fig. 3 is a rear elevation; Fig. 4 is a section taken on the line H, of Fig. 2; and Fig. 5 is a detail fragmentary perspective view of one of the anvil sections, showing the drill receiving therein.

Referring in detail to the drawing, 5 designates the base section of an anvil and 6 the upper relatively movable section thereof which is connected to said base section on its rear side by means of the heavy hinges 7, (see Fig. 3 This upper movable section of the anvil is of the usual form and is provided upon one end with the longitudinally extending tapering nose 8.

The anvil sections 5 and 6 are provided in drill sharpener and has for its primary ob-' groove or channel drill shanks,

their opposed faces with the substantially semi-circular mating channels or grooves 9 which are adapted to receive drill bits of relatively different sizes. The inner ends of these grooves or channels 9 have converging or tapering side walls, said converging inner ends of the grooves gradually increasing in depth, as clearly shown at 10 in Figs. 4 and 5 of the drawing, for the purpose of receiving the flared or widened point of the drill bit. The tapering inner ends of the grooves or channels 9 successively in crease in depth to receive drill points of varying widths.

To the upper movable section .6 of the anvil, the hasp 11 is loosely connected at one of its ends by means of thestaple 12.. The other with an opening to receive a pin, indicated at 13, fixed in the base section 5 of the anvil. In this manner, it will be understood that the upper anvil section 6 will be held in its operative position upon the base section 5 and against movement with respect thereto.

For the purpose of supporting the shanks ofthe drills, I provide a rod. or, bar 14. This bar has angularly disposed end portions 15 of relatively different lengths, the extremities of which are offset and formed with cylindrical studs 16 for removable engagement in openings or sockets 17 provided in the side face of the lower anvil section 5. A set of drills, the ones having the wider and broader cuttting points are usually of less length, the drill shanks gradually increasing in length as the cutting points decrease in width. consequently, the rod 14 is bent into the form shown in Fig. 1, the same being curved inwardly from the lower end portion 15 and extending in parallel relation to the face of the anvil adjacent to the opposite end of said rod.

or free end of said hasp is provided In order to effectively hold the upper section of the anvil against a relative movement with respect to the lower section, under the impact of the blows struckupon the I provide the grooved face of the lower section of the anvil with a longitudinally extending rib 18 which extends at i right angles to the grooves 9 intermediate of their ends. The grooved face of the upper anvil section is formed with a longitudinally extending groove or channel 19 for the purpose of receiving the rib 18. It will also relicve the hinges thus be apparent that when the upper end of the section is lowered into position upon the drill shanks, the rib is engaging in the groove 19, will preclude any relative shiftinggnovement of the upper anvil section and In the practical use of the invention, as above described, it will be understood that the upper anvil section 6 is first raised to its open position and the drill bits then engaged in the grooves or channels 9 of the lower base section of the anvil. The upper anvil section 6 is then lowered so that the drills will be received in the grooves or channels thereof and the hasp 11 is engaged with the pin 13. The shanks of the drills extend outwardly and rest upon the rod 14. The outer ends of the drill shanks are then struck with a sledge or hammer so that they are driven into the channels or grooves of the anvil sections. The points of the drill bits being frictionally engaged with the inner tapering and deepened ends 10 of the grooves in the anvil sections, will thus be sharpened by the swaging action thereon. It will be understood that provision is made in the anvil sections for the reception of eight drills. A set of drills is usually. of this number; but it will be understood that a greater or less number of the drill receiving grooves may be provided in the anvil sections, and an entire set of drills arranged in position at the same time, or one or more of the drills placed in position to be sharpened.

From the foregoing description, taken in connection with the accompanying drawing, the construction. manner of operation and several advantages of my invention will be clearly-"and fully understood. The device provides convenient means embodied in the construction of the ordinary blacksmiths anvil whereby the drill bits can be easily and quickly sharpened, and the use of an entirely separate sharpening machine for the bits is thus avoided. It will also be appreciated that the invention being of such simple construction, be embodied in the ordinary blacksmiths anvil at but little additional manufacturing cost.

While I have shown and described the preferred construction and arrangement of the several features of the device, it is to be understood that the same .is susceptible of considerable modifications therein and I, therefore, reserve the privilege of resorting to all such legitimate changes as may be 7 of the undue strain.

fairly embodied within the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I desire to claim and secure by Letters Patent, is

1. An anvil divided horizontally into two sections one of which is hinged to the other, the engaging faces of said sections being provided with complementary bit-receiving grooves extendingto one edge-of said anvil and formed at their inner ends to correspond to the shape of a drill point, said anvil being provided with means, other than the hinge connection, for holding said sections against relative horizontal movement when a drill bit is being sharpened by being driven into said bit-receiving grooves.

2. In an anvil, a base section, an upper relatively movable section adapted to be superposed thereon, the engaging faces of said anvil sections being provided with spaced bit-receiving grooves registering with each other'and extending transversely of the anvil, one of said anvil sections having a rib formed upon its grooved face and extending transversely to the grooves therein, the other of said sections being provided with a" groove registering with said rib;

whereby the said upper section is held against shifting movement with respect to the base section when the anvil is subjected to the impact of a blow delivered upon a drill shank.

3. In an anvil, a base section, an upper relatively movable section adapted to be superposed thereon, said anvil sections being provided in their engaging faces with spaced mating bit receiving grooves, extending transversely thereof, said base section hav ing a longitudinal rib formed upon its upper face extending between the spaced grooves therein, intermediate of the ends of the'same, and said upper section being provided with a longitudinal groove corre spondingly located to receive said rib, where by the movable upper section is held against shifting movement with respect to the base section when subjected to the impact of a blow delivered upon the drill shank.

iot

In testimony whereof I hereunto aflix my Witnesses:

G. H. FAnNsWon'rH, J. H. BEALS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

